ethtool 指令輸出的注意點

[[email protected] ~]# ethtool enp3s0f1  
Settings for enp3s0f1:
	Supported ports: [ TP ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Supported pause frame use: Symmetric
	Supports auto-negotiation: Yes
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Advertised pause frame use: Symmetric
	Advertised auto-negotiation: Yes
	Speed: 1000Mb/s------->>>務必是1000Mb/s  
	Duplex: Full------->>>務必是FULL,若是半雙工,意味着任一時刻,該網卡要麼隻能收,要麼隻能發. 
	Port: Twisted Pair------->>>雙絞線,若是萬兆,此處會顯示FIBRE
	PHYAD: 1
	Transceiver: internal
	Auto-negotiation: on
	MDI-X: off (auto)
	Supports Wake-on: d
	Wake-on: d
	Current message level: 0x00000007 (7)
			       drv probe link
	Link detected: yes------->>>務必是yes
[[email protected] ~]# 
           

參考文章:

RAC: Frequently Asked Questions (RAC FAQ) (Doc ID 220970.1)